Mobile device accessory insert



FIG. 1 is a front, top, and left side perspective view of a mobile device accessory insert;

FIG. 2 is a front side elevation view thereof;

FIG. 3 is a back side elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevation view thereof; and,

FIG. 7 is a right side elevation view thereof.

The dot-dash-dot broken lines along the left edge of the mobile device accessory insert denote unclaimed boundaries of the claimed design. The dash-dash broken lines depict portions of the mobile device accessory insert that form no part of the claimed design. 

CLAIM The ornamental design for a mobile device accessory insert, as shown and described. 